寫查詢連接

Question

select 
    store, sum(value) 
from 
    rms.sa_tran_head 
where 
    store_day_seq_no in (select store_day_seq_no 
         from rms.sa_store_day 
         where store in (3003) 
          and business_date = '01-JAN-2015') 
    and tran_type in ('SALE', 'RETURN') 
group by 
    store; 

如何使用連接到上面寫查詢..

SELECT 
    sd.store, 
    SUM(TH.VALUE) AS GROSS , 
    SUM(ti.qty) AS QTY 
FROM rms.sa_tran_head AS th 
    JOIN rms.sa_store_day AS sd 
     ON th.store_day_seq_no = sd.store_day_seq_no 
    JOIN rms.sa_tran_item AS ti 
     ON ti.tran_seq_no = th.tran_seq_no 
WHERE sd.store in (3003) --in (3003) use in if more than 1 value 
    AND sd.business_date = '01-JAN-2015' 
    AND th.tran_type IN ('SALE','RETURN') 
GROUP BY 
    sd.store; 

當我添加另一個表則顯示了不同價值觀的其他列...

Answer 1

我認爲這很好。

SELECT 
    t1.store, 
    SUM(t1.Value) AS Sum_Value 
FROM rms.sa_tran_head t1 
INNER JOIN sa_store_day t2 ON t1.store_day_seq_no = t2.store_day_seq_no 
WHERE t2.store IN (3003) 
    AND t2.business_date = '01-JAN-2015' 
    AND t1.tran_type IN ('SALE' , 'RETURN') 
GROUP BY t1.store 

Answer 2

我以爲store_day_seq_no是表rms.sa_store_day的FK，JOIN這樣的查詢，

SELECT 
    sd.store, 
    SUM(sd.value) AS [Sum] 
FROM rms.sa_tran_head AS th 
    JOIN rms.sa_store_day AS sd 
     ON th.store_day_seq_no = sd.store_day_seq_no 
WHERE 
    sd.store = 3003 --in (3003) use in if more than 1 value 
    AND sd.business_date = '01-JAN-2015' 
    AND th.tran_type IN ('SALE','RETURN') 
GROUP BY 
    sd.store;